First, all the components I used in my Project BMP will easily fit into this chassis, however I decided to design this chassis around full width axles (84" outside of tire to outside of tire shown).  To accommodate larger drive trains the new chassis features a taller & wider hood and a wider passenger compartment.  The lower frame rails were also re-designed to allow for a lot of foot room.  Here's some comparison shots of the new 2 seater chassis (BMP II) vs. the original 3 seater I recently built.  The front axle is pushed farther forward in the 2 seater chassis to accommodate the track bar up front and to keep the front axle in front of the motor.  With all the links being 34" long the new chassis would have an estimated wheelbase of 108.5" and better than a 90 degree approach angle front and rear with 39.5" tires.  Longer rear links would easily allow for bigger tires and a longer wheelbase if desired.

The part envelope shown in green is an inline 6 cylinder engine, 5 speed transmission and Dana 300 transfer case from a Jeep YJ (one of teh larger engine options out there).  A raised hood or hood bulge would be required and the stock radiator would need to be rear mounted (or a smaller one sourced). A custom 26 x 19" double pass radiator would fit up front. In addition, the belly pan of the chassis is left wide open to allow the transfer case and transmission to be removed from the vehicle without pulling the engine. Other engines that would fit easily: Pontiac 3.8l V6, Chevy 4.3l V6, Chevy 4.8/5.3/5.7/6.0/LT1, Ford 5.0l to name a few.  

The front axle could be located with either a 4 or 5 links (one of them being a trac bar), the rear easily fits a double triangulated 4 link.  There is room for a rear swaybar on the rear axle if you desire one,  the one shown is approx. 36" long.

Isometric views comparing the BMP II chassis to the original BMP chassis.  In back of the BMP II chassis I mocked up a stock YJ radiator and a 20 gallon fuel cell (approximate).  Basically BMP II is a compact 2 seater with lots of room.

Here are a few views without the body panels.  The drive train shown is my existing 1.6l with a Samurai Radiator, dual Toyota transfer cases, a 5 speed manual transmission and an 8 gallon fuel cell.  As you can see the engine bay is very roomy and should provide ample room for larger motors.

Specs:  Outside of door bar to outside of door bar is 55.6".  Belly to highest point on the roof is 55" and length from front bumper to rear most tube is 133.6". Estimated chassis weight is approx. 300lbs as shown.

Suspension Information: For further suspension information please read thru all of my project buildups starting with Project BMP up thru Hellraiser 4 as well as my 4 link write ups in the tech section.

Things to keep in mind:

1. I make no warranties of any kind for the performance or durability of this chassis.  You are buying plans only. If you chose to fabricate something using these plans you assume all risk in the fabrication and operation of the project.

2.  You will need a basic knowledge of tube bending and access to a tube bender, welder, chop saw, etc. Access to a plasma cutter or cutting torch would be very helpful but is not required.  The chassis is designed around 1 5/8 tubing with a bend radius of 4.5"***.  Larger tubing  or bend radii could be used with some adjustments to the initial tube lengths.  there are no bends over 90 degrees,

*** It has been brought to my attention that the 4.5" radius die is no longer available from JD2. If using a 5.5" radius die you need to start all 90 degree bends an inch sooner (you can scale bends smaller than 90 degree's back from there) and the cut lengths can be approx .40" less than what is shown on the drawing.   

3.  The plans are meant to be a guide.  Since there is no way to get the bends to match the plans %100 expect to have to make small adjustments.  The plans do have suggested cut lengths and start points for the bends.  It will be your responsibility to cope the tube ends.  In spots where there are straight braces I usually provide a recommended tube size and length, however in most cases your best bet is to measure the distance between the nodes to determine the actual cut length.

4.  The plans only cover the dimensions of the basic chassis.  This means gussets, mounting tabs, suspension related mounts on the axles, body panels, component mounts, and all interior mounting tubing, etc are your responsibility. 

5.  I will include a recommended list of material for the basic chassis.  You may want to purchase additional material if you would like to leave extra material on the cuts or if you feel you may have to re-do a section of tubing.

The price is $85 which includes 15 pages of drawings on 11 x 17 paper and includes shipping to anywhere in the Continental US and Canada.  As a bonus I also throw in 2 free DVD's (currently BTG Volume 3 & 3.5) so you can see what your new chassis can do. the bonus DVD offer is only available to buyers in the US. International orders are $98.

Note- you do not need a Paypal account to use your debit or credit card.

Options

US Buyer $85.00 Canadian Buyer $85.00 International Buyer $98.00

I also offer a discount for chassis plans buyers on the other DVD's I sell.  This offer is only valid if you purchase the DVD's at the same time as the plans. Buying all 3 remaining DVD's saves you $20 over the single price. Shipping is free.

Additional DVD Options

BTG Vol 1, 2 and 4 US $32.00 BTG Collection Canadian $60.00 BTG Vol 4 US $20.00 BTG Vol 4 Canadian $25.00 BTG Collection Int. $82.00 BTG Vol 4 Int $30.00